基于熵权-密切值法的地下储气库设计方案优选

UGS design proposal optimization based on entropy weight-osculating value method

地下储气库的建设属于高风险、高投入项目,地下储气库设计方案的优选直接关系到其整体经济效益。为此,综合考虑地下储气库综合费用、垫底气量、最大地层压力、工作井数、压缩机功率及地下储气库的使用寿命等影响因素,将多目标决策密切值法与熵权法相结合,建立了地下储气库方案设计优选模型。以中国某地下储气库为例,对6种设计方案进行优选分析。结果表明:设计方案4为该地下储气库设计的最优方案,与相关文献的优选结果存在一定的微小偏差,是由于增大了地下储气库建设综合费用的权重,这也正符合地下储气库这种大型地下工程偏重技术经济的要求。验证结果表明:所建熵权-密切值法地下储气库设计方案优选模型具有较高的推广应用价值,能够为地下储气库设计方案的优选提供有益的指导。

The construction of underground gas storage（UGS） is a project with high risk and high investment, so its design proposal optimization influences directly its overall economic benefits. Thus, a series of influential factors were analyzed comprehensively, including UGS total cost, cushion gas volume, maximum formation pressure, the number of working wells, compressor power and UGS service life. Then, a UGS design proposal optimization model was established by combing the multiple-objective-decision osculating value method and the entropy weight method together. And finally, a certain UGS in China was taken as an example and its six design proposals were analyzed for optimization. It is shown that the fourth UGS design proposal is the optimal one whose optimization result is less deviated from that of the related reference, for its weight on UGS total construction cost is increased. And this practice is in accordance with the requirement that large underground engineering（e.g. UGS） shall focus on technical economy. It is verified that the UGS design proposal optimization model based on entropy weight-osculating value method is worth popularizing and applying, and it can be used as the beneficial reference for UGS design proposal optimization.